The Invoice Auto Login addon allows you to include a new merge field in the invoice email templates that will automatically login the user and redirect them to the unpaid invoice. The key used in the URL is a randomly generated hash and automatically expires when the invoice is paid, cancelled or 20 days has passed since the key was generated.
The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
Added support for WHMCS 6.x
*Rewrote module to use new database modules which makes it compatible with WHMCS v6,v7 as well as php 5.6 and PHP7.
CleanHTML Invoice and Quote Free template.
As WHMCS does provide tax rules options where you can configure your GST tax but we have some extra features in our module that makes it stand out and necessary to use.
Introduce extra billing models and charge your clients for actual server resource usage.
Send account statements to customers
The definitive solution for all your billing needs plus a lot of additional features